A team of researchers has announced the discovery of a galaxy that magnified a background, Type Ia supernova thirty-fold through gravitational lensing. This first example of strong gravitational lensing of a supernova confirms the team's previous explanation for the unusual properties of this supernova.

Recent evidence that the universe expanded from microscopic to cosmic size in a mere instant brings with it important implications. During a live Google Hangout, leading astrophysicists from the University of Chicago and Stanford University discussed what this potential 'crack in the cosmic egg' means for our understanding of the universe.

Mysteries of one of the most fascinating nearby planetary systems now have been solved. The study presents the first viable model for the planetary system orbiting one the first stars discovered to have planets.

Ancient Earth might have had an extraterrestrial supply of vitamin B3 delivered by carbon-rich meteorites, according to a new analysis by researchers. The result supports a theory that the origin of life may have been assisted by a supply of key molecules created in space and brought to Earth by comet and meteor impacts.

Using NASA's Kepler Space Telescope, astronomers have discovered the first Earth-size planet orbiting a star in the 'habitable zone' - the range of distance from a star where liquid water might pool on the surface of an orbiting planet. The discovery of Kepler-186f confirms that planets the size of Earth exist in the habitable zone of stars other than our sun.

Geologists analyzed 40 meteorites that fell to Earth from Mars to understand the history of the Martian atmosphere. They show the atmospheres of Mars and Earth diverged in important ways early in the solar system's 4.6 billion year evolution.

This new image from ESO's La Silla Observatory in Chile reveals a cloud of hydrogen called Gum 41. In the middle of this little-known nebula, brilliant hot young stars are giving off energetic radiation that causes the surrounding hydrogen to glow with a characteristic red hue.